Apache: The Definitive Guide, 3rd Edition

Name

ap_checkmask — check whether a string matches a mask

Synopsis

int ap_checkmask(const char *data, const char *mask)

Checks whether data conforms to the mask in mask. mask is composed of the following characters:

@

An uppercase letter

$

A lowercase letter

&

A hexadecimal digit

#

A decimal digit

~

A decimal digit or a space

*

Any number of any character

Anything else

Itself

data is arbitrarily limited to 256 characters. It returns 1 for a match, 0 if not. For example, the following code checks for RFC 1123 date format:

if(ap_checkmask(date, "## @$$ #### ##:##:## *"))
    ...